The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1999
Filed:
Dec. 19, 1997
Antti Ilmarinen, Jyvaskyla, FI;
Valmet Corporation, Helsinki, FI;
Abstract
An extended nip press is provided having an advantageous nip press shoe which generates less heat than conventional press shoes. The nip press shoe includes an inrunning land surface which may be planar or convex. At least one lubrication pocket is downstream of the inrunning land surface and defines a cavity for supporting lubricant to create a hydrostatic lubrication region with a flexible jacket. The pocket has a bottom surface which converges towards the flexible jacket in a downstream direction. The press shoe further includes an outrunning land surface downstream of the lubrication pocket for engaging the flexible jacket against the opposite convex press element at a downstream end of the extended nip press. The outrunning land surface has a radius of curvature greater than the radius of curvature of the convex press element, and is planar in one embodiment, to create an attenuated hydrodynamic lubrication region with the flexible jacket.